DEVICE, METHOD AND SYSTEMS FOR DATA STORAGE CONSISTENCY IN A CONFIGURABLE SPATIAL ACCELERATOR

Methods and devices related to consistency in an accelerator are described. In one embodiment, Request Address File (RAF) circuits are coupled to a spatial array through a first network, a data store is coupled to the RAF circuits by a second network, an RAF circuit is allowed to request data storage that is program-order dependent is flagged from a previous request, does not issue in the second network until it receives a first token generated by the completion of the previous request to the data store by another RAF circuit, and a second RAF circuit is allowed to make a second request to the data memory marked with a program order dependency from a first request, not output to the second network until it receives a second token sent by a first RAF circuit when a predetermined time has elapsed since the first request by the first RAF circuit is output to the second network wu would recommend.